#include <iostream>
using std::cout;
using std::endl;

int num = 100;

//匿名空间
namespace
{
int num = 10;

void print(){
    cout << "wd::print()" << endl;
}
}

void test0(){
    cout << ::num << endl;
}

int main(void){
    test0();
    return 0;
}
